<template>

    <div class="mui-numbox" data-numbox-min='1'  style="height: 25px">
        <button class="mui-btn mui-btn-numbox-minus" type="button">-</button>
        <input id="test" class="mui-input-numbox" type="number" :value="initcount"  @change="countChanged" ref="numbox" readonly/>
        <button class="mui-btn mui-btn-numbox-plus" type="button">+</button>
    </div>

    <!-- 分析： 子组件什么时候把 数据传递给父组件 -->
    <!--  -->
</template>

<script>
    import mui from "../../lib/mui/js/mui.min"

    export default {
        mounted() {
            // 初始化数字选择框组件
            mui(".mui-numbox").numbox();
        },
        methods: {
            countChanged() {
            //数量改变了,立即把最新的数量同步到购物车的store中，覆盖之前的数量值
                this.$store.commit('updateGoodsInfo',{ id:this.goodsid, count:this.$refs.numbox.value});

            }
        },
        props:["initcount","goodsid"]
    };
</script>

<style lang="scss" scoped>

</style>